Pendulous automatic weighing scale



July 17, 1923. 1,461,741

w. TlMsoN ,PENDULOUS AUTOMATIC WEIGHIG SCALE Filed Dec. '7. 1921 2Sheets-Sheet 1 July 17, 1923.

W. TIMSON PBNDULOUS AUTOMATIC wEIGHlNG SCALE Filed Dec. v. 1921 2sheets-sheet 2 W.Tm $01".

wml si Arran EL Patented July 17, 1923.

y{Jiu-'rire ySTATES 1,461,741 PATENT OFFICE.

WELIAM TIMSON, F BIRMINGHAM, ENGLAND, ASSIGNOR T0 W. & T. AVERY, LII.ITED, QF BIRMINGHAM, ENGLAND.

PENDULOUS AUTOMATIC W'EIGHLNG SCALE.

`ilpplicattlcn. died December 7, 1921. Serial No. 520,690.

To all whom it 'ma/y comm:

Y'Be itknown that"WILnmn Tucson, a

subject of the of Great I Brtain., residing at Soho, Foundry,Birmingham, England, has invented a new and useful Improvement inPcndulous Automatic Weigh 1n Scales; and he does hereby declare thefollowing to be a full, clear, and exact description of the same.

This invention has reference to improvements in pendulous automaticweighing scales of that kind in which two pendulums are employed whichmove in o posite directions in order to automatic y counteract 16 anyerror in the level of the scale to maintain the indicator in its correctposition irres ctive of the level. Our present invention diii'ers fromknown scale constructions of this kind in the disposition of the twopendulums, in combination with the connexion between the pendulums, andin the mounting of the indicator.

The invention will now bc described in conjunction with the accompanyingdrawings wherein similar reference numerals icate similar parts in theseveral views.

Fig. l is a art `sectional front elevation of the scale, the pendulumresistances and the weight indicating pointer being shown in the midload osition.

Fig. 2 is a etail view extracted from Fig. l, illustrating the movementsof the two pendulums and the weight indicating pointer the mechanismbeing in the zero or no load position.

Fig. 3 is a cross sectional elevation at right an les to Fi ..1 viewedfrom the left hand si e, the left and side of the housing beine deemedto have been removed.

Figs. 4, 5, and 6 are respectively front elevation, end elevation and asectional plan on line 6--6 of Fig. 4, all drawn to an enlaroed scaleillustrating the peculiar stay an plate connexion between the twopendulums.

These drawings illustrate an automatic scale particularly applicable forshop counter use, the scale mechanism is located within -a housing 7 theupper part of which is provided with a weights graduation chart S acrosswhich the fork ended weight index pointer 9 moves. The scale pan 10ismounted 1n the usual manner on a lever l1 which is ulcrumed at theknife-edge 12 on the bearing bracket 13 which is mounted on the baselate 14. This base plate is provided with T eet 15 and an adfJustablelevelling screw 16.

'lower end of the connecting rod`18 which is suspended at its upper endby means of another rectangular link 19 from a knifeedge on theweighbeam 20, this weighbeam is fulcrumed by means of a. knife-edge 21on the bracket 22 connected to the iront and back of the scale housing7, and this weighbeam is provided with an adjustable balance weight 23on one arm of the weighbeam, the other arm of the weighbeam beinpivotally connected to the piston rod 24 o the dashpot or vibrationchecking device 25, this dash )ot being mounted on the bracket 2G secureto the housing 7.

Dependent from the weighbeam 20 and vertically below the fulcrmnknife-edge 2l thereof is a rod 27 on which is adjustably mounted one ofthe pendulous weights 28 ormin part of the weighing resistance of the sce, this rod is connected at its lower end by means of a crankedknife-edged plate 29 to a segmental knife-edged stay 30, the stay beingin turn connected to a knifeedged plate 3l which is secured by screws toan arm 32 disposed below the rod 27, this arm 32 is connected to thesecond adjustable pendulous weight 33 which also forms part of theweighin resistance of the scale, the pendulous weig it 33 bein mountedon the screwed rod 34 which is lsposed vertically below and in alignmentwith the screwed rod 27. The arm 32 which is an integral part of thecylindrical boss 35 is also provided with a third endulous weight 36,these pendulous weig ts forminor the total weighing resistant of thescale. 'Ihe screwed rod 34 is secured at its upper end in thecylindrical boss 35 and by means of a knifecdve 37; the boss 35, arm 32,pendulous weights 33 and 36, and the rod 34 are mounted on a commonfulcrum on the bracket 38 which is mounted on the scale housing. Securedto the front face of the cylindrical boss 35 is the lower end of theindex pointer 9 which is Shown broken ofl' in Fig. l for the sake ofclearness, the pointer being forked at its u per end as clearly seen inFig. 2 to simu taneously indicate both to the salesman and the purchaserthe weight indication on both sides of the chart 8.

The particular novelty of the present inlllll ventid reigledpatlztxdlspoition of the 'adjustable pendulous we hts 1 "elavtlive toeach other, and in the met od of conbhe Penluhnn by mlm'of the edgedplates and stays 29, 3'0 'and 31, `which latter feature is showinclearly in Figs. 4, 5 and 6.

An automatic weighing scle comprisingr in combimglziox1-av Schleim, .alever upon which thezsfznepn its. wanted, Connecting rod, e, WeV-ghbeerpconnected vto seid lever by said connecting rod, e rod mounted in saidwe y beam, a pendulum weight aJdjustnbly mounted oh s'afld rbd, Secondpendulum weight moultd re'ticll below aforesaid pendulum weight, a screwthreaded rod on which sa'd second pendulum is adjustablym'ounted, aknife-edge mount,- ing for the second pendulum weight, a wel `1tindicato connected t0 the second pen ulum` weightumechanism, andknifeedfed ples and stays connecting the pendu ous Weighbeamv with thesecond pendu- 111m weight, f the p11 Vbezem "set infin.

l testimony where?, I have sighed my haine u) thisspecification.

WILLIAM TMS.

